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Finding the Fourth Proportional to 312,276.63, 430,941.95 and 169,037.85

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Solution

The fourth proportional to 312,276.63, 430,941.95 and 169,037.85 is: 233,272.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,276.63 : 430,941.95 = 169,037.85 : x
  2. Step 2: Convert to fraction form
    312,276.63/430,941.95 = 169,037.85/x
  3. Step 3: Cross multiply
    312,276.63x = 430,941.95 × 169,037.85
  4. Step 4: Simplify right side
    312,276.63x = 72,845,497,702.91
  5. Step 5: Solve for x
    x = 72,845,497,702.91/312,276.63
  6. Step 6: Final answer
    x = 233,272.34

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.